Answer: B: can be seen in the exchange of ideas and goods
Explanation:
In a social system, there are peers and strangers to distract one from pursuing their work. While chatting with others, you may forget your train of thought or a good idea. People are likely to take you away from your work more so than a physical system (in which you can always turn off the TV, but not get people to quiet down)
Answer:
A - The Greeks were able to stop a Persian invasion, and the Persian Empire stopped trying to conquer Greece.
Explanation:
As a result of the war with Persia, the Greeks defended their freedom, freed their Minor Asian and island ‘brothers’ from the Persian rule, and established their dominance in the Aegean Sea and the Black Sea straits. Persia was unable to resume offensive operations against the Greeks. In 449, after a new defeat of Persia by the Greeks, a peace was made near the Cypriot city of Salamis. The rampant expansion of the Achaemenid dynasty was halted for the first time, and the ancient Greek state entered the era of its highest cultural achievements.
Answer:
The creation of constantinople by constantine
Explanation: